An arrest reports says that correction officers at the Clark County Detention Center were conducting routine bed checks at about 1 a.m. when they noticed a body on the floor of a two-person cell. Blood was splattered across the floor and walls.

Correction officers found Guilford sitting on his bed in the cell. The 18-year-old told detectives Sanfilippo grabbed his buttocks, prompting a fight.

Guilford then changed his story, telling detectives he attacked his cellmate because of the devil.

Guilford was in jail on murder charges after telling detectives devils encouraged him to kill his 6-year-old relative.